Installation guide

# Size (in KB) of each copy operation when mirroring
mirror_region_size = 512
# 'mirror_image_fault_policy' and 'mirror_log_fault_policy' define
# how a device failure affecting a mirror is handled.
# A mirror is composed of mirror images (copies) and a log.
# A disk log ensures that a mirror does not need to be re-synced
# (all copies made the same) every time a machine reboots or crashes.
#
# In the event of a failure, the specified policy will be used to
# determine what happens:
#
# "remove" - Simply remove the faulty device and run without it. If
# the log device fails, the mirror would convert to using
# an in-memory log. This means the mirror will not
# remember its sync status across crashes/reboots and
# the entire mirror will be re-synced. If a
# mirror image fails, the mirror will convert to a
# non-mirrored device if there is only one remaining good
# copy.
#
# "allocate" - Remove the faulty device and try to allocate space on
# a new device to be a replacement for the failed device.
# Using this policy for the log is fast and maintains the
# ability to remember sync state through crashes/reboots.
# Using this policy for a mirror device is slow, as it
# requires the mirror to resynchronize the devices, but it
# will preserve the mirror characteristic of the device.
# This policy acts like "remove" if no suitable device and
# space can be allocated for the replacement.
# Currently this is not implemented properly and behaves
# similarly to:
#
# "allocate_anywhere" - Operates like "allocate", but it does not
# require that the new space being allocated be on a
# device is not part of the mirror. For a log device
# failure, this could mean that the log is allocated on
# the same device as a mirror device. For a mirror
# device, this could mean that the mirror device is
# allocated on the same device as another mirror device.
# This policy would not be wise for mirror devices
# because it would break the redundant nature of the
# mirror. This policy acts like "remove" if no suitable
# device and space can be allocated for the replacement.
mirror_log_fault_policy = "allocate"
mirror_device_fault_policy = "remove"
}
####################
# Advanced section #
####################
# Metadata settings
#
# metadata {
# Default number of copies of metadata to hold on each PV. 0, 1 or 2.
# You might want to override it from the command line with 0
# when running pvcreate on new PVs which are to be added to large VGs.
# pvmetadatacopies = 1
# Approximate default size of on-disk metadata areas in sectors.
# You should increase this if you have large volume groups or
# you want to retain a large on-disk history of your metadata changes.
2. Sample lvm.conf File
73